2170914231617 has 4 divisors (see below), whose sum is σ = 2172733942980. Its totient is φ = 2169094520256.

The previous prime is 2170914231523. The next prime is 2170914231631. The reversal of 2170914231617 is 7161324190712.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1311503653681 + 859410577936 = 1145209^2 + 927044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2170914231617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170914231637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909853892 + ... + 909856277.

It is an arithmetic number, because the mean of its divisors is an integer number (543183485745).

Almost surely, 2^{2170914231617} is an apocalyptic number.

It is an amenable number.

2170914231617 is a deficient number, since it is larger than the sum of its proper divisors (1819711363).

2170914231617 is a wasteful number, since it uses less digits than its factorization.

2170914231617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819711362.

The product of its (nonzero) digits is 127008, while the sum is 44.

The spelling of 2170914231617 in words is "two trillion, one hundred seventy billion, nine hundred fourteen million, two hundred thirty-one thousand, six hundred seventeen".